API Token under use credentials


In my task, it is important to have not just one key to access the Trello board, but several keys. Each user should have their own key. Our solution creates cards on the board periodically, and it is important to see who created the card.

For these purposes, I used the page https://trello.com/app-key and then the page authorize to generate the keys.

However, I have encountered a problem where some users do not see their private key on the https://trello.com/app-key page.

Could you advise me on what might be causing this and how to solve the problem?